Texas Instruments TI89TITANIUM User Manual - Page 884

Style CATALOG Style equanum, stylePropertyString Sets the system graphing function equanum in the current graph mode to use the graphing property stylePropertyString. equanum must be an integer from 1-99 and the function must already exist. stylePropertyString must be one of: "Line", "Dot", "Square", "Thick", "Animate", "Path", "Above", or "Below". Note that in parametric graphing, only the xt half of the pair contains the style information. Valid style names vs. graphing mode: Function: Parametric/Polar: Sequence: 3D: Diff Equations: all styles line, dot, square, thick, animate, path line, dot, square, thick none line, dot, square, thick, animate, path Note: Capitalization and blank spaces are optional when entering stylePropertyString names. Style 1,"thick" ¸ Done Style 10,"path" ¸ Done Note: In function graphing mode, these examples set the style of y1(x) to "Thick" and y10(x) to "Path". subMat() CATALOG subMat(matrix1[, startRow] [, startCol] [, endRow] [, endCol]) ⇒ matrix Returns the specified submatrix of matrix1. Defaults: startRow=1, startCol=1, endRow=last row, endCol=last column. [1,2,3;4,5,6;7,8,9]! m1 ¸ subMat(m1,2,1,3,2) ¸ subMat(m1,2,2) ¸ 14 2 5 36 7 8 9 [47 58] [58 69] Sum (Sigma) See G(), page 908. sum( ) MATH/List menu sum(list[, start[, end]]) ⇒ expression Returns the sum of the elements in list. Start and end are optional. They specify a range of elements. sum(matrix1[, start[, end]]) ⇒ matrix Returns a row vector containing the sums of the elements in the columns in matrix1. Start and end are optional. They specify a range of rows. sum({1,2,3,4,5}) ¸ 15 sum({a,2a,3a}) ¸ 6ø a sum(seq(n,n,1,10)) ¸ 55 sum({1,3,5,7,9},3) ¸ 21 sum([1,2,3;4,5,6]) ¸ [5 7 9] sum([1,2,3;4,5,6;7,8,9]) ¸ [12 15 18] sum([1,2,3;4,5,6;7,8,9],2,3) ¸ [11,13,15] 884 Appendix A: Functions and Instructions